单项选择题

Questions 33 to 35 are based on the passage you have just heard.

A．By its thick layer of fat under its skin.
B．By moving frequently in the water.
C．By adjusting its blood temperature.
D．By taking in hot air.
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单项选择题
According to the information we get in Come What May: Handling the Garden Variety Computer Crisis , which of the following statements is NOT TRUE
A．Systems crash can also hobble your PC.
B．Kids "rearranging" data may destroy your information.
C．Adults inadvertently deleting files will lead to an information destruction.
D．Only physical disaster can damage your computer.
单项选择题
You should ______after selecting your tools and a suitable medium.
A．find a distant place to store your backups
B．bounce back quickly
C．trust Internet-based backup service
D．rest easy
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